We have both a high yield and low yield for this printer, these two are:
http://www.123inkcartridges.ca/oki-toner-cartridge/B4600C.html
B4600C, Approx 7000 Pages.
http://www.123inkcartridges.ca/oki-toner-cartridge/B4400C.html
B4400C, Approx 3000 Pages.
Although they are seemingly a bit different, both can be used for B4600.
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When installing the new cartridge, as you remove it from it's protective bag, gently shake the cartridge as to free up all the toner and then peel/take of the protective sealing strip. Place the cartridge aside.
- Open the printer door, turn the blue/colored lever towards you which unlocks the cartridge from the drum unit, and pull it out.
- Now place in the new cartridge where the previous one was and rotate the blue/colored lever to lock it in. You can now close the printer.
